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Asked in GSEB Board March 2022 · Series and parallel combinations
Given: series value Cₛ = 3 μF, parallel value Cₚ = 16 μF.
Idea: Cₚ = C₁ + C₂ and Cₛ = (C₁C₂)/(C₁ + C₂), so C₁C₂ = Cₛ Cₚ.
So C₁ + C₂ = 16 and C₁C₂ = 3×16 = 48.
C₁ and C₂ are the roots of t² - 16t + 48 = 0, i.e. (t-4)(t-12) = 0.
Check: 4 + 12 = 16 and (4×12)/(16) = 3.
So the capacitors are 4 μF and 12 μF.
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